Antibacterial Activity of Copper-doped Montmorillonite Nanocomposites Prepared by Alkaline Ion Exchange Method

Pourabolghasem, Hamideh; Ghorbanpour, Mohammad; Shayegh, Razieh

doi:10.21315/jps2016.27.2.1

Cited by 25 publications

(11 citation statements)

References 13 publications

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“…Combination of magnetic nanoparticles with clays has been applied even in enzymatic immobilization [17], as bactericide materials [18], T in catalytic activity [19,20], environmental remediation and biocompatible materials [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Barraqué¹,

Montes

Fernández³

et al. 2018

Journal of Magnetism and Magnetic Materials

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Montmorillonite magnetic-clay nanoparticles (MtMag) and its exchanged product with hexadecyltrimethylammonium (O100MtMag) were synthetized by alkaline oxidation of ferrous sulfate, characterized by diverse techniques (XRD, Mössbauer spectroscopy, VSM, SEM, Zeta Potential, total specific surface area, TOC) and used as Co 2+ sorbents. The magnetic characteristic of these materials allows them to be used in cases of decontamination of water polluted with dangerous materials, such as radioactive ones, reducing the risk to health due to indirect manipulation by means of external magnetic fields. For comparison, samples without magnetic material (O100Mt) and in absence of clay (Mag) were also synthetized. The synthesis of magnetic materials disclosed the presence of magnetite and goethite nanoparticles, while the saturation magnetization displayed by O100MtMag was higher than that obtained for MtMag, indicating the existence of a higher amount of magnetite particles in the first one. This suggests that O100MtMag could be manipulated easier than MtMag through external magnetic fields. Moreover, the surface electric charge of MtMag sample can be described as a mixture of Magnetite and montmorillonite, with ratios related to the surface of both components. Co 2+ sorption percentages, using an initial Co 2+ concentration of 85 mg/L, resulted similar for the different materials while the Co 2+ sorption was ascribed to interactions with the montmorillonite interlayer and external surface. The current results indicate that O100MtMag is a more appropriate material than MtMag for Co 2+ removal by external magnets.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Barraqué¹,

Montes

Fernández³

et al. 2018

Journal of Magnetism and Magnetic Materials

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“…Furthermore, biocompatibility is enhanced, since clays and nanoparticles-clay composites are inherently nontoxic to the environment. 6,8,17 Consequently, clay minerals are an economical, complementary therapeutic solution for topical bacterial infections. Clay minerals possess a net negative charge, facilitating exchange of positively charged ions on their surface.…”

Section: Introductionmentioning

confidence: 99%

Diffusion of Cu Ions into Nanoclay by Molten Salt Ion Exchange for Antibacterial Application

Nouri¹,

Ghorbanpour²,

Lotfiman³

2018

JPS

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“…58 Inhibitory activity of copper-doped montmorillonite nanocomposites were also evaluated against E. coli and S. aureus. 59 It is important to mention that the Fe 3 O 4 nanostructures as the most magnetic nanoparticles, have received a wide attention in the biomedical applications, especially for targeted gene/drug delivery systems due to their outstanding features in magnetism, lower toxicity, biocompatibility, biodegradability, and so on. The Fe 3 O 4 nanostructures are easy to oxidize and aggregate, and thus they are often made with different coating agents such as SiO 2 as stabilizers to realize superior properties for gene/drug delivery.…”

Section: Discussionmentioning

confidence: 99%

Comparative Evaluation of the Inhibitory Potential of Synthetic N-Heterocycles, Cu/Fe₃O₄@SiO₂ Nanocomposites and Some Natural Products against Non-Resistant and Antibiotic-Resistant Acinetobacter baumannii

et al. 2020

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Background: Acinetobacter baumannii is a common infectious agent in hospitals. New antimicrobial agents are identified and prepared to combat these bacterial pathogens. In this context, the blocking potentials of a series of synthesized N-heterocyclic compounds, Cu/Fe3O4@SiO2 nanocomposites, glycine, poly-L-lysine, nisin and hydroalcoholic extracts of Trachyspermum ammi, Curcuma longa and green tea catechins were evaluated against non-resistant and multidrug-resistant strains of A. baumannii. Methods: Solutions of heterocyclic derivatives and hydroalcoholic extracts of Trachyspermum ammi, Curcuma longa and green tea catechins were prepared at initial concentration of 10240 μg ml-1 in 10% DMSO. Other compounds were dissolved in water at the same concentrations. Their in vitro inhibitory activity was assessed by determination of IZD, MIC and MBC values. Results: Glycine, poly-L-lysine, nisin, Curcuma longa and green tea catechins extracts, and thiazoles 3a, 3d and 3f were ineffective at their initial concentrations. Heterocyclic derivatives 7a-f, 3c, 3e and 3h, Cu/Fe3O4@SiO2 nanocomposites and Trachyspermum ammi extract could block the growth of bacterial strains with IZDs (7.40-15.51 mm), MICs (32-1024 µg ml-1) and MBCs (128-2048 µg ml-1). Conclusion: Among synthetic chemicals and natural products, the best antimicrobial effects were recorded with (E)-2-(5-acetyl-4-methylthiazol-2-yl)-2-(thiazolidin-2-ylidene)acetonitrile (7b) and the extract of Trachyspermum ammi. It is imperative that their toxic and histopathologic effects were assessed in future researches. It is predicted that the essential oil of Trachyspermum ammi will improve its antibacterial activities.

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Antibacterial Activity of Copper-doped Montmorillonite Nanocomposites Prepared by Alkaline Ion Exchange Method

Abstract: Abstract:The antibacterial activity of copper-doped montmorillonite nanocomposites (Cu-MMT)

Cited by 25 publications

References 13 publications

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Diffusion of Cu Ions into Nanoclay by Molten Salt Ion Exchange for Antibacterial Application

Comparative Evaluation of the Inhibitory Potential of Synthetic N-Heterocycles, Cu/Fe₃O₄@SiO₂ Nanocomposites and Some Natural Products against Non-Resistant and Antibiotic-Resistant Acinetobacter baumannii

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Antibacterial Activity of Copper-doped Montmorillonite Nanocomposites Prepared by Alkaline Ion Exchange Method

Abstract: Abstract:The antibacterial activity of copper-doped montmorillonite nanocomposites (Cu-MMT)

Cited by 25 publications

References 13 publications

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Synthesis and characterization of magnetic-montmorillonite and magnetic-organo-montmorillonite: Surface sites involved on cobalt sorption

Diffusion of Cu Ions into Nanoclay by Molten Salt Ion Exchange for Antibacterial Application

Comparative Evaluation of the Inhibitory Potential of Synthetic N-Heterocycles, Cu/Fe3O4@SiO2 Nanocomposites and Some Natural Products against Non-Resistant and Antibiotic-Resistant Acinetobacter baumannii

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Comparative Evaluation of the Inhibitory Potential of Synthetic N-Heterocycles, Cu/Fe₃O₄@SiO₂ Nanocomposites and Some Natural Products against Non-Resistant and Antibiotic-Resistant Acinetobacter baumannii